With that amount of investment you have only 2 choices to make either you go for altcoin investment or else try your luck in gambling and if you are lucky then you can double your investment even in a single day so you can choose according to the risk that you can afford to take.
No, gambling is not really an option if you want to raise the capital you have, investing in a casino bankroll is different since you can earn a nice interest rate every month but gambling is not a good option it is better to try and trade some altcoins or try to find a goo investment opportunity.
Trading altcoin is always good in compare to gambling as in gambling there are more chances that you will loose your investment but in altcoin trading you can make good profits if you choose a right coin at a right time.